Effect on SE traffic when site converted ASP to ASP.NET

I have an e-commerce website. Which is doing quite well in terms of Search engine Traffic. I am planning to convert it from asp to asp.net. But the thing that is bothering me is the extension. Currently my website's urls end with the extension .asp but after converting it into asp.net the extension will be .aspx. Any body have any idea how search engine will behave on this issue.

 

well SE will take it as new urls and all your old urls will be 404 from your main domain which is obviously not a good thing.

redirect .asp extension to .aspx

 

you need to include in robots.txt file that not to crawl those old pages and redirect old url to new url

 

Yeah, redirect old to new with 301.

But it also depends on site's response time. If it's faster after conversion - better rankings.
Or...

 

Thanks for reply. I am trying to keep every thing same navigation, urls and content. The only thing i want to know is that what Search Engine do when it finds there is already a page in its cache like..

http://www.domain.com/subdirectory/name.asp

which is converted without redirection to

http://www.domain.com/subdirectory/name.aspx

kindly give me some suggestions..

thanks

 

Not withstanding my usual, dude use linux plug.... I was able to dig this up

http://www.webmasterworld.com/google/3569816.htm
Link to actual answer: http://www.webmasterworld.com/microsoft_asp_net/3485671.htm

I hope that helps... I am, by no stretch, a fan of windows
With apache you can dictate url sanity in one file.

Nigel